How to install a mailbox on a post?
Mailboxes on posts are often close to the street and are therefore exposed to all types of weather as well as to passing snowplows. They need a sturdy foundation to remain solidly anchored into the ground and straight. That’s why a screw pile foundation is both an efficient and durable solution.

Stability and solidity

In order to ensure its durability, our installer will use specialized equipment to drive the screw pile past the ground’s frost line. Firmly anchored into the ground by the helix plate at the bottom of the pile, your mailbox will be impervious to ground movements caused by spring thaw. It will remain level and straight, and it will never sink into the ground.

Quick and easy installation

We offer piles ranging in diameter between 1 ⅞ and 6 ⅝ inches equipped with helix plates anywhere from 8 to 36 inches in size. Our expert engineers will determine which type of pile to use according to the scope of the work and the type of soil.

Install your mailbox without having to dig a hole or to pour concrete, making it a quick and clean job! Our Kubota mini-tractor is equipped with lawn tires that will not damage your property, contrary to the heavy machinery required for regular foundations. Our equipment is also capable of circulating and functioning in very tight spots, which means that our installers can easily install piles close to existing structures.

Moving and reusing screw piles

The screw pile can be removed if needed. Thanks to our specialized equipment, your installer can remove the pile from the ground and move it elsewhere. If you ever want to change your mailbox’s location, the screw pile can be extracted and installed elsewhere on your property.


To obtain a fair work estimate, contact one of our Pro Post Foundations accredited dealers.

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Our Piles

Similar to a giant screw, the piles are driven into the ground using specialized equipment and are anchored into place thanks to a helix plate situated at the bottom of the shaft. The piles can therefore securely support structures such as houses, patios, garden sheds, fences and much more. The piles can be used to support new or existent structures.

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Other applications for piles

From clotheslines to cottage foundations, screw piles can be used for an ever increasing number of things! Screw piles can be used to support all sorts of structures: car ports, terraces, houses, cottages, house extensions, solariums, lamp posts, clotheslines, and much more.